Hit 7.5K once. Now I can't duplicate it. Here is the combo:
6D(1)(CH)>CT>664D>236B>Staff.A>2~OD>j.236DB~236C+3D>6C(1)+6D~(2)+3D>6A>4D>66(Towards Corner)~236A~236C~3D>6A~6D>6428C>632146C
Gives about 7.5K but requires you to start in the corner and bring the opponent midscreen.
Requires 125 heat so the extra staff hits are necessary.
a more practical combo:
Staff set at corner (ex, after 6D)
5C>236A~236C~j236B>63214A>staff.A~421D>j.D>j.665C>]j.D2[>665B>6B>41236D~A>421D>3C>]D[>3C>421C>6D(1)>623D
4001 damage meterless.